/ Precision Measuring Tools / Gage Blocks / Standard Reference Bars / RB 18. * Not actual product image RB 18. Standard Reference Bar #(--edpnumber)# Standard Reference Bars 18" Reference Bar - Free Standing These Standard Reference Bars are invaluable for use in checking table movement of machine tools, accuracy of vernier height gages, surface plate transfer measurement, and for final inspection of precision machine tools and coordinate measuring machines. The alternating gage block jaws and spacer blocks are permanently wrung and fastened together to form 1" increments. A special bushing arrangement allows the master stack to conform to thermal conditions prevailing during use, thus providing a true master even under less than perfect laboratory conditions. Mating surfaces are treated during assembly to prevent corrosion. Non-standard lengths and measuring increments are available on special order. Features Specifications Downloads Product Testimonials Other similar products RB 10. Standard Reference Bar RB 12. Standard Reference Bar RB 18. Standard Reference Bar RB 8. Standard Reference Bar RBC 12. Standard Reference Bar RBC 19. Standard Reference Bar RBC 25. Standard Reference Bar RBC 37. Standard Reference Bar RBC 49. Standard Reference Bar RBCM 1250. Standard Reference Bar RBCM 300. Standard Reference Bar RBCM 500. Standard Reference Bar RBCM 650. Standard Reference Bar RBCM 950. Standard Reference Bar RBM 200. Standard Reference Bar RBM 250. Standard Reference Bar RBM 300. Standard Reference Bar RBM 450. Standard Reference Bar Contact Starrett Features Free Standing Certificate of Calibration included Furnished in a storage case Specifications Type: Free Standing Size: 18" Unit Of Measure: Inch System Tolerance (Stack) Max: 2.5L + 10L in inches Tolerance (Stack) Min: - 10 Parallelism: 15 µin. Uncertainy of Calibration: 10 + 2.0L in inches expressed in µin. Downloads Catalog 33 - Section 19 - Starrett-Webber Gage Blocks We offer high-grade steel gage blocks for shop floor use, longer lasting and non-corroding ceramic blocks. Top-of-the-line croblox® Chromium Carbide, are very stable, non-corrosive and have excellent wringability. A variety of sets are available in square- and rectangular block versions. We also offer individual replacement blocks and a range of related accessories. Precision Hand Tools (Catalog 33) 612 page catalog featuring precision hand tool, force measurement, vison systems, optical comparators, laser measurement, and flat stock. Product Testimonials Write a product review Write a product review Comments* First Name* Last Name* Email* Occupation The information you provide will be used in accordance with the terms of our privacy policy. I agree to the privacy policy. Please provide the required information. Thank you for submitting a product testimonial on www.starrett.com. By submitting information to Starrett, you acknowledge and give express permission for the L.S. Starrett Company to use and share your statements.